Activities

Grid manager and transmission agent

Red Eléctrica is responsible for the transmission of high voltage electricity in Spain. To do so, it manages the electricity infrastructures that make up the transmission grid and connects the power stations to the points where it is distributed to consumers.

Law 17/2007, of 4 July, confirmed the status of Red Eléctrica as the manager of the transmission grid and attributed it the function of sole transmission agent under a regime of exclusivity. In compliance with this Law, in 2010 Red Eléctrica acquired the assets of the Balearic Islands and Canary Islands and the remaining assets on the Spanish peninsula that were pending transfer from the electric utility companies. This acquisition represented the definitive consolidation of the model of sole transmission agent and electricity system operator.

As manager of the transmission grid, Red Eléctrica is responsible for developing and enlarging the grid, carrying out its maintenance and managing the transmission of electricity between external systems and the Spanish peninsula and guaranteeing third party access to the transmission grid under equal conditions.

In-service facilities

The transmission grid of Red Eléctrica is comprised of more than 43,000 kilometres of high voltage electricity lines and more than 5,000 substation bays, and more than 85,000 MVA of transformer capacity. These assets make up a meshed grid that is secure and reliable that offers the highest level of service quality to the Spanish electricity system.

Transmission grid (peninsular and extra-peninsular) of Red Eléctrica. Data available at December 31, 2016

Km of circuit 2012 2013 2014 2015 2016
400kV 20,109 20,639 21,094 21,184 21,620
220kV 18,779 19,053 19,192 19,386 19,496
150 - 132 - 110kV 272 272 272 398 523
< 110kV 2,014 2,014 2,014 2,022 2,025
Total 41,174 41,978 42,572 42,989 43,664

Substation bays (peninsular and extra-peninsular) of Red Eléctrica. Data available at December 31, 2016

Number of bays 2012 2013 2014 2015 2016
400kV 1,319 1,374 1,394 1,441 1,458
220kV 2,936 3,026 3,077 3,124 3,150
150 - 132 - 110kV 52 52 52 84 90
< 110kV 743 745 769 779 791
Total 5,050 5,197 5,292 5,428 5,489

Transformer capacity (peninsular and extra-peninsular) of Red Eléctrica. Data available at December 31, 2016

Power (MVA) 2012 2013 2014 2015 2016
Total 78,629 81,289 83,939 84,544 85,144